This is a migrated thread and some comments may be shown as answers.

Validation problem

3 Answers 113 Views

GridView

This is a migrated thread and some comments may be shown as answers.

ManniAT asked on 16 May 2013, 07:38 PM

Hi,

I have a MVVM application which showed a strange behavior.
To reproduce it I "switched to event mode" which has:

<telerik:RadGridView Grid.Row="1" ItemsSource="{Binding Bearings}" AutoGenerateColumns="False" ShowInsertRow="True" ShowGroupPanel="False" RowValidating="RadGridView_RowValidating" CanUserDeleteRows="True" CanUserInsertRows="True">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn Header="Ordnungszahl" Width="*" DataMemberBinding="{Binding Ordnungszahl}" IsFilterable="True" SortMemberPath="Ordnungszahl" IsSortable="True" />

<telerik:GridViewDataColumn Header="BauartenCode" DataMemberBinding="{Binding BauartenCode}" Width="120" IsFilterable="False" IsSortable="True" />

<telerik:GridViewDataColumn Header="AussenDMCode" DataMemberBinding="{Binding AussendurchmCode}" Width="120" IsFilterable="False" IsSortable="False" />

<telerik:GridViewDataColumn Header="Stufe" DataMemberBinding="{Binding Stufe}" Width="120" IsFilterable="False" IsSortable="False" />

<telerik:GridViewDataColumn Header="Unterstufe" DataMemberBinding="{Binding Unterstufe}" Width="120" IsFilterable="False" IsSortable="False"/>

</telerik:RadGridView.Columns>

</telerik:RadGridView>

In code behind I do nothing more than:

private void RadGridView_RowValidating(object sender, Telerik.Windows.Controls.GridViewRowValidatingEventArgs e) {

e.IsValid = false;

}

When I hit ESC twice - editing is ended and the "old values" are displayed - but the row still displays "invalid" (red exclamation mark, red background).

What I expect is that the row becomes valid since it has the original (valid) values after "CancelEdit" (Hitting ESC twice).

The second problem (in debug) I get a "ArgumentNullException" (Parameter instance must not be null) when I add a row without entering anything hit ESC twice.

Manfred

3 Answers, 1 is accepted

Accepted